Voltage indicator IN 3-10R-10 UHL3

Voltage indicating device (stationary voltage indicator) IN 3-10R-10 UHL3 is designed for visual and remote voltage monitoring separately in each of the phases of switchgear, single-end service assembled chamber 6-35 kV, use in blocking and alarm circuits, increasing personnel safety. Specification attached in Table 1.

The device includes:

  • display unit, 1 pc.,
  • relay unit, 1 pc.,
  • carry electrodes, capacitive or resistive, 3 pcs.,
  • connecting cables.

 

Table 1

Title Value
Max. threshold value of voltage indication 0.45 Unom *
Max. reaction time to voltage changes, s 1
Permissible supply voltage range of the AC / DC relay block, V 85-250/100-350
Operating temperature range of ambient air, ° C from - 25 to + 40
Maximum voltage on the display unit, V 90-250*
The duration of the high voltage tests, min 5
Protection class IP40

* as agreed with the customer

 

If in devices of series IN 3-10R-00, IN 3-10R-05 there are 2 three-contact relays, where one relay is triggered for the presence of voltage in all three phases, and the second for the absence of voltage in all phases, then in IN 3-10R- 10 in the relay block there are 3 three-contact relays for monitoring the voltage separately in each phase.

Possible combinations of controlled signals are provided in Table 2. Each unit corresponds to the applied voltage, whereas 0 corresponds to its absence. Each relay is triggered for the presence of voltage in the corresponding phase. In the first, second and third columns, 1 means - the relay is active, 0 - the relay is inactive. By agreement with customer, another logic is possible.

In accordance with the standard of PJSC «Rosseti» STO 34.01-3.2-005-2016 “Prefabricated single-chamber service chambers. General technical requirements ”and the standard of JSC «FGC EES» STO 56947007-29.130.104 -2011“ Typical technical requirements for switchgear of voltage classes 6-35 kV , the device withstands high-voltage tests during 5 min.

Operational power source is not required to indicate the LEDs.

 

Table 2

К1 К2 К3 Operational power supply Phase А Phase В Phase С
0 0 0 0 Any combination
0 0 0 1 0 0 0
1 0 0 1 1 0 0
0 1 0 1 0 1 0
1 1 0 1 1 1 0
0 0 1 1 0 0 1
1 0 1 1 1 0 1
0 1 1 1 0 1 1
1 1 1 1 1 1 1